Regulating microstructures of interpenetrating polyurethane-epoxy networks towards high-performance water-lubricated bearing materials

被引：36
作者：
Yu, Ping [1 ,2 ]
Li, Guitao [1 ]
Zhang, Ligang [1 ]
Zhao, Fuyan [1 ]
Chen, Shoubing [1 ]
Dmitriev, Andrey I. [3 ,4 ]
Zhang, Ga [1 ,5 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Tomsk State Univ, Lenin Av 36, Tomsk 634050, Russia
[4] RAS, Inst Strength Phys & Mat Sci, SB, Tomsk 634055, Russia
[5] Qingdao Ctr Resource Chem & New Mat, Qingdao 266071, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2019年 / 131卷
基金：
中国国家自然科学基金;
关键词：
Polyurethane/epoxy interpenetration networks; Water lubrication; Tribological properties; VISCOELASTIC PHASE-SEPARATION; MECHANICAL-PROPERTIES; TRIBOLOGICAL PROPERTIES; THERMAL-PROPERTIES; POLYMER NETWORKS; WEAR-RESISTANCE; SLIDING WEAR; BEHAVIOR; COMPOSITES; GRAPHENE;
D O I：
10.1016/j.triboint.2018.11.010
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Structural evolution and mechanical properties of polyurethane/epoxy interpenetration networks (PU/EP IPNs) as a function of PU content were comprehensively studied. In particular, tribological behaviors of the IPNs were investigated in water medium while varying lubrication regimes. Our results demonstrate that microstructures of PU/EP IPNs are closely dependent on stoichiometric proportions of their components. It is impressive that unlike conventionally modified polymers, blending 30 wt% PU into EP leads to simultaneous improvement in modulus, strength and ductility. Especially for sliding subjected to boundary lubrication, IPNs exhibited strikingly enhanced tribological performance when compared to neat EP and PU. Our work indicates that IPNs have a high application potential as tribo-materials exposed to water lubrication.
引用
收藏
页码：454 / 464
页数：11
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